/*
 * Copyright (c) 2022-2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { isNullPtr } from "./Wrapper"
import { KPointer } from "./InteropTypes"

export function nullable<T>(value: KPointer, body: (arg: KPointer) => T | undefined): T | undefined {
    if (isNullPtr(value)) {
        return undefined
    } else {
        return body(value)
    }
}
